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Finding the Fourth Proportional to 61,963.20, 92,892.72 and 43,188

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Solution

The fourth proportional to 61,963.20, 92,892.72 and 43,188 is: 64,745.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,963.20 : 92,892.72 = 43,188 : x
  2. Step 2: Convert to fraction form
    61,963.20/92,892.72 = 43,188/x
  3. Step 3: Cross multiply
    61,963.20x = 92,892.72 × 43,188
  4. Step 4: Simplify right side
    61,963.20x = 4,011,850,791.36
  5. Step 5: Solve for x
    x = 4,011,850,791.36/61,963.20
  6. Step 6: Final answer
    x = 64,745.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.